Pedicle morphometry analysis of main thoracic apex adolescent idiopathic scoliosis.

INTRODUCTION: Screw insertion during scoliosis surgery uses free-hand pedicle screw insertion methods. However, there is a wide variation in pedicle shapes, sizes, and morphometry, especially in scoliosis patients. CT scan pedicle measurements in main thoracic Lenke type 1 adolescent idiopathic scoliosis can help visualize this diversity. This study aimed to highlight the features of pedicle morphometry on the concave and convex sides, including pedicle diameter (width in axial and height in the sagittal plane), the depth to the anterior cortex, and Watanabe Pedicle classification in patients with main thoracic apex adolescent idiopathic scoliosis. MATERIALS AND METHODS: This study was a cross-sectional observational study of Adolescent Idiopathic Scoliosis (AIS) patients whose apex in the main thoracic patient underwent deformity correction procedures. We used a three-dimensional CT scan to evaluate pedicle morphometry on the apex vertebrae, three consecutive vertebrae above and below the apex. RESULTS: A total of 6 patients with apex main thoracic AIS with 84 pedicles consisting of 42 pedicles from each concave and convex curve were analyzed. All of the samples were female, with the mean age at the procedure being 21.2 ± 5.56. The mean cobb angle was 62° ± 23°, with the main apex between VT8-VT10. The size of the pedicle was bigger from upper to lower vertebrae. The mean pedicle depth, pedicle width, and pedicle height for the concave side were 36.06 ± 4.31 mm, 3.91 ± 0.66 mm, and 9.16 ± 1.52 mm, respectively. Meanwhile, the convex side is 37.52 ± 1.84 mm, 5.20 ± 0.55 mm, and 11.05 ± 0.70 mm, respectively. We found a significant difference between the concave and convex sides for the pedicle width and height. The concave and convex sides were mainly classified as type C (38%) and type A (50%) Watanabe pedicle. CONCLUSION: Pedicle width and pedicle height are significantly different between the concave and the convex side with convex side has better Watanabe pedicle classification. Pre-operative CT evaluation is essential for planning proper pedicle screw placement in AIS patients.

Neglected bilateral triphalangeal of the thumb delta type in adult case: A case report.

INTRODUCTION: In rare case, thumb has extra phalanges known as triphalangeal of the thumb (TPT). Patients with TPT can have difficulty doing work/activities that require high precision. Therefore, surgical intervention is essential. This report provides an approach for a patient with TPT. PRESENTATION OF CASE: A patient with TPT who underwent removal of extra phalanges and arthrodesis of interphalangeal (IP) joints is presented. The left thumb deviated 25o to ulnar while the contralateral part deviated 15o to radial. X-ray revealed both thumbs had extra delta-shaped middle phalanges. Complete excision of extra phalanges and simple arthrodesis of IP joints with two K-wires in 10° to 15° flexion was performed. Healing process ended without any complications and the patient had an improvement. DISCUSSION: Productive-age patients with TPT can have difficulty doing work and activities that require high precision, especially in the non-opposable type of the right hand. Furthermore, the female patient is highly emphasizing the cosmetics of her hand to increase her self-confidence. Therefore, surgical intervention is essential for this patient. We performed complete excision of extra phalanges and simple arthrodesis of IP joints with two K-wires in 10° to 20° flexion. The first K-wire is introduced intramedullary as a primary fixator for longitudinal alignment, and the second wire is inserted obliquely as an anti-rotation wire. Functional outcome was assessed after 6 months post-removal of the wire which gave a satisfying result. CONCLUSION: TPT is a rare anomaly which surgical intervention can improve the appearance and the precision of the hand.

Angiosarcoma in the femoral bone: A case report of a rare bone tumor.

INTRODUCTION AND IMPORTANCE: Angiosarcoma is a high-grade endothelial sarcoma rarely found in the bones. Challenges lie in its rareness, high mortality, metastasis, and recurrence. The role of radiotherapy and chemotherapy in managing angiosarcoma remains debatable, while surgery stands out as the optimal treatment for local control. We present a patient with angiosarcoma of the bone, managed through a combination of surgery and radiotherapy. CASE PRESENTATION: A 66-year-old male presented with pain on the right distal femur and was unable to weight bearing after lifting a box. The X-ray showed a fracture and lytic lesion. The patient has lost 5 kg of body weight in the last 3 months. The Clinicopathological Conference (CPC) suspects a malignancy process, prompting us for wide resection, biopsy, and ORIF with cement augmentation. Histopathology and immunohistochemistry results confirmed the diagnosis of angiosarcoma. We decide to manage patients with radiotherapy without chemotherapy and regular monthly monitoring. The patient exhibited clinical improvement. DISCUSSION: Angiosarcoma of the bone tends to have a bad prognosis. Diagnosis might be challenging as it is a rare condition and could be easily confused with another disease. The routine CPC we held was beneficial for the diagnosis and treatment of the patient. The combination of surgery and radiotherapy is yielding positive outcomes. CONCLUSION: Angiosarcoma should be considered in patients with osteolytic lesions in the bone. Surgery and radiotherapy are important to local control in patients with angiosarcoma.

Isolated skeletal Langerhans cell histiocytosis in adults: A case report.

INTRODUCTION AND IMPORTANCE: LCH in adults is rarely encountered, with the preference in children and axial skeleton as predilection site. Limited understanding of adult LCH causes frequent misdiagnosis, as our experience in an adult case of LCH threw off our differential diagnosis. CASE PRESENTATION: A 21-year-old male was referred to our hospital due to pain in his right shoulder. Plain radiograph and MRI showed a solitary well-marginated lytic lesion on the distal third of the clavicle. Together with a clear history and physical exam, the benign bone cyst was suspected and we performed an open biopsy simultaneously with curettage followed by internal fixation using a bone graft. Pathology and immunohistochemistry dismissed our suspicion and confirmed LCH as the main diagnosis. At six months post-surgery, no signs of recurrence were seen on the fixated site nor complained by the patient. DISCUSSION: Diagnosing LCH involves considering imaging appearances and patient demographics as initial clues. However, confirming the diagnosis requires a biopsy with proven CD1 expression. Currently, the majority of studies recommend confirming the diagnosis before initiating therapy. This precaution is necessary due to the unclear pathophysiology of LCH, which complicates the implementation of specific therapies. Based on benign features of skeletal lesions found from imaging, invasive treatment before biopsy confirmation still gave a satisfactory outcome despite not being in line with the current recommendation. CONCLUSION: Excisional biopsy and curettage in solitary LCH yield satisfactory outcomes. However, further studies are needed with larger sample sizes and interventional designs.

Right Thigh Mass Metastasis from Lung Cancer Mimicking Primary Soft Tissue Sarcoma: A Case Report.

BACKGROUND Soft tissue metastases (STMs) are less common than bone metastases and sometimes misdiagnosed as primary soft tissue malignancies. Skin, lungs, and breast are the most common primary lesions of STMs and rarely the presenting symptoms. We present an STM from lung adenocarcinoma that became a presenting symptom in nonsmoking woman. CASE REPORT A 47-year-old woman presented to our hospital with a painful mass in her right thigh and weight loss of 10 kg for 4 months. Femoral radiograph revealed a lesion suggestive of bone sarcoma. However, magnetic resonance imaging (MRI) showed it was more likely a primary soft tissue sarcoma. A small mediastinal mass was noticed on preoperative chest radiograph, and the patient denied any symptoms except the mass in the right thigh. Our clinicopathological conference team decided to perform a biopsy of mediastinal and right thigh masses. Histopathology examinations confirmed the right thigh mass as soft tissue metastasis from mediastinal mass, confirmed as lung adenocarcinoma. We treated the patient with palliative care with zoledronic acid and gefitinib. At the 6-month follow-up, the patient's symptoms significantly improved, and MRI showed a marked size reduction. CONCLUSIONS Diagnosis of STM can be difficult when presenting as the primary manifestation. Failure to identify promptly can lead to rapid disease progression and unfavorable prognosis. Failure to diagnose primary malignancy during biopsy occurs in approximately 28% of cases. This report has the potential to facilitate the avoidance of unnecessary procedures and highlight the importance of using a multidisciplinary approach in managing cases with malignancy.

Utilizing Low-cost Vacuum-assisted Closure as Adjuvant Therapy in Soft Tissue Reconstruction for a Mangled Upper Extremity.

Soft tissue reconstruction using flaps in managing mangled injuries is occasionally insufficient due to large defects and low flap viability. Conversely, delaying the closure of the defect can elevate the risk of infection. Adjuvant therapy becomes essential in the management of mangled injuries. We aim to present the use of low-cost vacuum-assisted closure (VAC) as an adjuvant therapy for mangled injuries. We reported the case of a 20-year-old man who sustained a mangled injury to his left forearm in a traffic accident 4 hours before admission. The mangled extremity severity score was 9; however, the patient declined amputation. Although the initial reconstruction was done, the flap could only cover vital structures. VAC was utilized to address the uncovered portion of the defect, to promote optimal granulation and prevent infection. The reconstruction proceeded with a skin graft and wrist arthrodesis. At 1-year follow-up, viable tissue was obtained but contracture occurred at the metacarpophalangeal and proximal interphalangeal joints. We intend to perform functional reconstruction at a later stage. Although the benefits of VAC in wound management are well established, reports regarding its advantages in mangled injury management remain relatively scarce. The high cost of VAC is a limiting factor, particularly in developing countries. This prompts the need for an affordable VAC innovation with comparable efficiency to the commercial model. Reverse Aqua Pump VAC, our innovative low-cost VAC, shows satisfactory outcomes in managing patients with mangled injuries with mangled extremity severity score indicating amputation.

Balloon compression-induced spinal cord injury in canines: a large animal model for spinal cord injury research.

Spinal cord injury (SCI) is a life-altering condition that severely impacts an individual's functional capabilities and has significant implications for both the individual and society. Large animal models are crucial for understanding the pathology and biomechanics of SCI. Dogs (Canis lupus familiaris) are promising models for SCI research due to their anatomical and histopathological similarities to humans. Balloon compression is an established method for inducing controlled SCI in canines. In this study, we optimized a balloon compression procedure for inducing SCI in dogs, aiming to develop a reliable model for future in vivo studies. Our methodology successfully induced total motoric loss in canines, observed for seven days, a critical period for therapeutic interventions. Histopathological examinations using Luxol fast blue (LFB) staining revealed total demyelination in intralesional samples, confirming the structural damage caused by balloon compression. We concluded that a balloon compression model at the T10-T11 vertebral level, with an inflated balloon volume of 1.0 ml, induced SCI while minimizing the risk of balloon rupture. Longer duration of compression ensures total paralysis in this model, providing a platform for testing therapeutic interventions during the acute phase of SCI. The canine model generated consistent data and facilitated straightforward observational findings.

The role of genetic polymorphisms of interleukin-1 (IL-1R1 and IL-1RN) in primary knee osteoarthritis in Indonesia.

This study aimed to evaluate the association of SNPs of the IL-1 family with the clinical severity of knee OA. This case‒control study was performed among 100 healthy knees and 130 osteoarthritis (OA) knees of people aged ≥ 50 years with a BMI ≥ 25 kg/m2. The possible correlations among clinical findings, radiographic evaluations, serum levels of IL-1R1 and IL-1Ra, and genotype analyses were evaluated. Three SNPs of IL-1R1, rs871659, rs3771202, and rs3917238, were associated with primary knee OA. Females with IL-1R1 SNP rs871659 allele A had a higher prevalence of primary knee OA. No correlation was found between SNPs of IL-1R1 and IL-1RN and clinical or radiologic severity or serum concentrations of IL-1R1 and IL-1Ra (p > 0.05). BMI and IL-1R1 rs3917238 genotype C/C were correlated with moderate-severe VAS scores. A correlation was also found between the EQ-5D-3L self-care dimension and obesity and between the EQ-5D-3L pain and usual activity dimensions and age ≥ 60 and obesity (p < 0.05). Radiologic severity was only associated with age ≥ 60 years (p < 0.05). We found the IL-1R1 SNPs rs871659, rs3771202, and rs3917238 to be predisposing factors for primary knee osteoarthritis. The clinical findings, radiographic severity, and serum concentrations of IL-1R1 and IL-1Ra were not correlated with these gene polymorphisms.

Genetic Role in Recurrence of Idiopathic CTEV: A Systematic Review.

Background: Congenital Talipes Equinovarus (CTEV) is a multitude of deformities involving equinus, varus, adductus, and cavus deformities. Clubfoot affects 1 in every 1000 infants born worldwide, with various incidences according to geographical areas. It has been previously hypothesized that the possible genetic role in Idiopathic CTEV (ICTEV) might have a treatment-resistant phenotype. However, the genetic involvement in recurrent ICTEV cases is yet to be determined. Aim: To systematically review existing literature regarding the discovery of genetic involvement in recurrent ICTEV to date to further understand the etiology of relapse. Methods: A comprehensive search was performed on medical databases, and the review was conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) 2020 guidelines. A comprehensive search was performed on several medical databases: PubMed (MEDLINE), Scopus, the Cochrane Library, and European PMC on May 10, 2022. We included studies reporting patients with recurring idiopathic CTEV or CTEV of unknown cause after treatment, reporting whole-genetic sequencing, whole-exome sequencing, Polymerase Chain Reaction, or Western blot analysis as methods of genetic analysis (intervention) and providing results of idiopathic CTEV genetic involvement. Non-English studies, literature reviews, and irrelevant articles were excluded. Quality and risk of bias assessments were performed using Newcastle-Ottawa Quality Assessment Scale for non-randomized studies where appropriate. The authors discussed data extracted with the primary outcome of gene(s) frequency being reported of their involvement in recurrent ICTEV cases. Results: Three pieces of literature were included in this review. Two studies analyzed the genetic involvement in CTEV occurrence, while one analyzed the protein types found. Discussion: With included studies of less than five, we could not perform other forms of analysis apart from qualitatively. Conclusion: The rarity of literature exploring the genetic etiology of recurrent ICTEV cases has been reflected in this systematic review, giving opportunities for future research.

Longstanding Volkmann ischemic contracture of the forearm following traditional bonesetter practice successfully treated with combined flexor origin slide and tendon transfer: A case report.

INTRODUCTION AND IMPORTANCE: The Volkman ischemic contracture (VIC) of the forearm is a sequel of the compartment syndrome of the forearm. There were no studies reported the outcome of surgical treatment for VIC, particularly the muscle origin slide procedure, in treating the VIC that had been developed more than 20 years. CASE PRESENTATION: We reported a 34 years old right-hand dominant painter with fingers flexion contracture, decreased hand mobility and sensation on her right hand. She had history of closed right forearm fracture when she was 10 years old that was treated by a traditional bonesetter. A week afterward, she experienced clinical presentation of compartment syndrome. Not long thereafter, the pain subsided but she started to have stiffness and discomfort in her forearm and hand condition. Twenty-four years later, she wants to get treatment for her hand. We diagnosed her with VIC, moderate degree based on Tsuge Classification. We then performed flexor origin slide procedure and tendon transfer. In 1.5 year of follow-up, a satisfactory functional outcome was noted. CLINICAL DISCUSSION: Flexor origin slide was the preferred treatment if the flexors still retain adequate strength. During the surgery, severe degeneration of FPL and FDP was found. Therefore, we performed tendon transfer to increase the grip strength. CONCLUSION: VIC is not uncommon following fracture treated in the traditional bonesetter. For moderate VIC, the flexor origin slide procedure and tendon transfer could still give benefit, even in the case of treatment delay of more than 20 years from onset.

Impact of the COVID-19 on the surgical management of bone and soft tissue sarcoma: A systematic review.

Background: The COVID-19 pandemic had greatly and negatively impacted health services including the management of bone and soft tissue sarcoma. As disease progression is time-sensitive, decision taken by the oncology orthopedic surgeon on performing surgical treatment determines the patient outcome. On the other hand, as the world tried to control the spread of COVID-19 infection, treatment re-prioritization based on urgency level had to be done which consequently affect treatment provision for sarcoma patients. Patient and clinician's concern regarding the outbreak have also inflicted on treatment decision making. A systematic review was thought to be necessary to summarize the changes seen in managing primary malignant bone and soft tissue tumors. Methods: We performed this systematic review in line with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) 2020 Statement. The review protocol had been registered on PROSPERO with submission number CRD42022329430. We included studies which reported primary malignant tumor diagnosis and its surgical intervention from March 11th, 2020 onwards. The main outcome is to report changes implemented by different centers around the world in managing primary malignant bone tumors surgically in response to the pandemic. Three electronic medical databases were scoured and by applying eligibility criteria. Individual authors evaluated the articles' quality and risk of bias using the Newcastle-Ottawa Quality Assessment Scale other instruments developed by JBI of the University of Adelaide. The overall quality assessment of this systematic review was self-evaluated using the AMSTAR (Assessing the Methodological Quality of Systematic Reviews) Checklist. Results: There were 26 studies included in the review with various study designs, conveyed in almost all continents. The outcomes from this review are change in surgery time, change in surgery type, and change in surgery indication in patients with primary bone and soft tissue sarcoma. Surgery timing has been experiencing delay since the pandemic occurred, including delay in the multidisciplinary forum, which were all related to lockdown regulations and travel restrictions. For surgery type, limb amputation was preferred compared to limb-salvage procedures due to shorter duration and simpler reconstruction with better control of malignancy. Meanwhile, the indications for surgical management are still based on the patient's demographics and disease stages. However, some would stall surgery regardless of malignancy infiltration and fracture risks which are indication for amputation. As expected, our meta-analysis showed higher post-surgical mortality in patients with malignant bone and soft tissue sarcoma during the COVID-19 pandemic with odds ratio of 1.14. Conclusion: Surgical management of patients with primary bone and soft tissue sarcoma has seriously been affected due to adjustments to the COVID-19 pandemic. Other than institutional restrictions to contain the infection, patient and clinician's decisions to postpone treatment due to COVID-19 transmission concern were also impactful in treatment course. Delay in surgery timing has caused higher risk of worse surgical outcome during the pandemic, which is aggravated if the patient is infected by COVID-19 as well. As we transition into a post-COVID-19 pandemic period, we expect patients to be more lenient in returning for their treatment but by then disease progression might have taken place, resulting in worse overall prognosis. Limitation to this study were few assumptions made in the synthesis of numerical data and meta-analysis only for changes in surgery time outcome and lack of intervention studies included.

Classic and rare manifestations of multiple osteoma: A case report.

INTRODUCTION AND IMPORTANCE: Osteoma is a benign tumor that can arise from compact or cancellous bone and is more commonly found in the face or skull. The incidence of osteoma believed to be underreported as most are asymptomatic. To date, the best modality to diagnose osteoma is CT scan. We report a unique case of osteoma presenting with cranial and extracranial manifestations and highlight the importance of bone survey in evaluating patients with osteoma. CASE PRESENTATION: A 26-year-old female complained of bilateral pain in the jawbone and several areas of her head. On physical examination, there were several masses in the head with the largest on the left mandible measuring 5.6 × 6.0 × 4.5 cm from MSCT examination. Hemi-mandibulectomy, histopathological and cytopathology examination were performed on the tissue obtained from the left mandible which concluded osteoma. Post-operative bone survey was performed and found osteoma on left ulna and bilateral fibula. Suspected Gardner syndrome with multiple osteoma manifestation was excluded from normal results of colon in-loop examination. We conservatively monitored the patient and most recent 6-month follow-up found no complaint nor changes in the extracranial osteoma manifestation on left ulna and both fibulas. CLINICAL DISCUSSION: The benign tumor osteoma is incredibly uncommon to present both intra and extracranially. We suggest thorough skeletal studies such as bone survey to be performed as they are crucial in the full evaluation of patients with multiple osteomas. Osteoma treatment is based on the patient's symptoms, surgery for patients with symptoms and periodic monitoring for asymptomatic patients. CONCLUSION: It is necessary to consider radiological modality for diagnosing osteoma patients. The majority of osteomas are asymptomatic and the choice of radiological examination sometimes still misses the lesion. It is important to evaluate histologically if the lesion difficult to diagnose.

Modified femoral neck rotational osteotomy with supercapsular approach as hip preservation surgery technique for osteonecrosis of femoral head in young patient: A case report.

INTRODUCTION: Osteonecrosis of Femoral Head (ONFH) is a debilitating condition with multiple contributory etiological factors that can lead to significant hip pain and disability. All attempts should be taken to save the joint and postpone or avoid the necessity for a total hip arthroplasty (THA), particularly in young and active individuals. CASE PRESENTATION: A 21-year-old female with 5-year history of Systematic Lupus Erythematosus (SLE) and long-term use of corticosteroids presented with left hip pain and limping that worsening over the past two months. She had a Leg Length Discrepancy (LLD) of 1 cm. After radiological examination, she was diagnosed with left ONFH FICAT II-III ARCO stage 3. The measured Kerboul angle was 1800, indicating a medium necrotic area. We performed joint preservation surgery through Femoral Neck Rotational Osteotomy (FNRO) using Hip Supercapsular Approach. On a 3-month evaluation, the patient's pain improved significantly, and radiographic evaluation showed good healing of the osteotomy site. DISCUSSION: FNRO is a joint preservation surgery technique that aims to improve vascularization by moving the area of necrosis away from the weight-bearing region. The Hip Supercapsular Approach was chosen due to numerous advantages, such as short incisions, preservation of blood supply to the femoral head, and clear visualization of both necrotic lesion and healthy bone and cartilage. CONCLUSION: Modified FNRO with Hip Supercapsular approach may be a promising surgical procedure for young patients with ONFH. It yields favorable results in terms of pain alleviation, improvement in joint functionality, and radiological outcomes while maintaining a minimally invasive setting.

Impacts of COVID-19 pandemic on pediatric fractures: a 4-year evaluation of epidemiology and delayed treatment from prepandemic to pandemic period at a tertiary referral hospital.

Background: Definitive fracture surgery should be performed as soon as the patient's condition allows. However, there may be some delays in the treatment during a pandemic. Objective: This study aimed to investigate and compare the epidemiology and delays in pediatric fracture management during the pandemic and prepandemic periods in terms of how many cases were delayed, how long were the delays, and the causes for the delays of fracture treatment. Methods: This comparative-retrospective study was conducted in a tertiary referral hospital in Yogyakarta, Indonesia. The authors included all patients who presented to the hospital from 1 December 2019 to 30 November 2021 (pandemic group period) and from 1 December 2017 to 30 November 2019 (prepandemic group period). The collected data included: patients' age and sex, fractured bone, fracture type, concurrent fracture, hospital stay duration, treatment, need for multidisciplinary treatment, interval from arrival to treatment, and reasons for delayed surgical treatment. The data were obtained from the patients' medical records. Results: Results showed a decrease in the pediatric fracture cases during the 2 years pandemic period compared to the prepandemic period (75 vs. 135 cases). There was no significant difference in the evaluated parameters of demographic, fractured bone and type, hospital stay duration, treatment, other department involvement, and delayed surgical treatment for the fracture. The most common reason for the definitive surgical management delay was the need for medical condition improvements (n=63, 79.7%) and it was significantly associated with the need for multidisciplinary treatment approach (22.83 in isolated orthopedic cases vs. 87.5% in multidisciplinary cases; P=0.000). Conclusion: There was a decrease in the pediatric fracture cases during the 2-year pandemic period compared to the prepandemic period. The delay in definitive surgical management was mainly due to the need for the medical condition improvements and it was associated with the need for a multidisciplinary treatment approach.

Predictors of the conservative management outcomes in patients with lumbar herniated nucleus pulposus: A prospective study in Indonesia.

BACKGROUND: The objective of this study was to identify the predictors of the conservative management outcomes in patients with lumbar herniated nucleus pulposus (HNP). METHODS: A prospective study was conducted between June 2010 and April 2012 in Banda Aceh, Indonesia. Clinical and baseline neurologic examinations such as passive straight leg raising test (SLRT), cross SLRT, and patellar and Achilles reflexes were assessed prior to the conservative management. The patients were evaluated at 2nd, 4th, 8th, 12th and 24th week following commencement of the conservative management. RESULTS: We recruited and followed 171 HNP patients of which 35.7% of them had good outcome. At univariate analysis, patients with more than 12 months duration of complaint, those with dominant radicular pain, severe pain intensity (visual analogue scale 7-10), positive SLRT, positive cross SLRT, and reduced motor power of knee extensors (muscle strength grade 1-4), were associated with poor outcome. Multivariate analysis suggested that patients with dominant radicular type of pain were likely to had poor outcome compared to those with dominant back pain (odd ratio (OR) 10.57 with 95% confidence interval (CI) 1.15-96.93). Patients with reduced motor power of knee extensors also had a higher chance to have poor outcome compared to those who were normal (OR: 10.57; 95% CI: 1.15-96.93). CONCLUSION: Type of pain and the strength of lower extremities could be able to predict the failure of conservative management in patients with lumbar disc herniation. However, further studies with the bigger sample size are warrant to validate our results.

Comparison of insertion time, pull-out strength, and screw-media interface area of customized pedicle screw with different core and thread design against commercial pedicle screw: a pilot study on Indonesian Population.

OBJECTIVE: This research aimed to developing customized pedicle screw based on Indonesian vertebral anatomy and compare the insertion time, pull-out strength, and screw-media interface area of different screw design. We have developed 3 different types of pedicle screws (v-thread cylinder-core, square-thread cylinder-core and square-thread conical-core). The thread diameter was calculated from pedicle width of Indonesian population (6 mm). We used commercially available pedicle screw as control group (6.2 mm). RESULT: The insertion time were significantly difference between v-thread cylinder-core pedicle screw (22.94 s) with commercially available pedicle screw (15.86 s) (p < 0.05). The pull-out strength was significantly difference between commercially available pedicle screw (408.60 N) with square-thread conical pedicle screw (836.60 N) (p < 0.05). The square-thread conical-core group have the highest interface area (1486.21 mm2). The data comparison showed that the square-thread conical-core customized pedicle screw group has comparable insertion time and has better pull-out strength than commercially available pedicle screw.

Interleukin-1 genetic polymorphisms in knee osteoarthritis: What do we know? A meta-analysis and systematic review.

PURPOSE: Interleukin-1 is the main proinflammatory cytokine in osteoarthritis (OA). Several single-nucleotide polymorphisms (SNPs) within the IL-1 gene cluster (IL-1ß, IL-1R1, and IL-1RN) have been determined, but their associations with knee OA remain poorly understood. The present study aimed to identify the associations between IL-1 SNPs and knee osteoarthritis. METHODS: This meta-analysis and systematic review included all comparative studies published in the MEDLINE/PubMed, Embase, Google Scholar, and Cochrane Library databases. We performed a systematic search to identify relevant studies on the evaluation of the correlation between the IL-1 gene and knee OA published up to February 2020 that met the eligibility criteria. Nine studies on a total of 2256 knees with OA and 3527 healthy knees met the eligibility criteria. Results associated with IL-1A, IL-1B, IL-1R1, and IL-1RN SNPs were extracted and compared between knees with OA and healthy knees. Methodological quality was assessed using the Newcastle-Ottawa scale (NOS). All studies with fair or good quality were included. RESULTS: The meta-analysis showed that the risk of knee OA is decreased by the IL-1RN*1 and IL-1RN*1/*1 genotypes and increased by the IL-1RN*2 and I-L1RN*1/*2 genotypes. The systematic review revealed only two studies associating the IL-1RN allele, none associating the IL-1B polymorphism, and only one study associating IL-1A and IL-1R1 polymorphisms with knee OA. CONCLUSIONS: Several IL-1RN alleles and genotypes play a role in knee OA but other genetic variations in the IL-1 region were still conflicting in its association with knee OA.

Occipitocervical fixation: A case report of our techniques and results.

INTRODUCTION: Occipitocervical fixation (OCF) can provide good fusion rate to treat various craniovertebral junction (CVJ) pathologies. Biomechanically it gives rigid fixation, good fusion rate, and allows for effective decompression. However, rigid fixation on the mobile occipitocervical junction has shortcomings that affect the post-operative clinical functional outcomes and range of motion. This study aimed to evaluate and elaborate the functional outcomes, range of motions, and radiographic findings in our patients underwent OCF. CASE REPORT: We presented a report of 3 patients underwent posterior decompression procedure followed by occipitocervical fixation. All three patients' clinical outcome was assessed clinically by, Japanese Orthopaedic Association (JOA) score and grading, Karnofsky, range of motion and radiographic cervical alignment evaluation parameters. RESULT: All patients have seen improvement (minimal 1 grade in JOA and >30 points of Karnofsky score) in 3 months after the procedure, had a tolerable range of motion limitation, normal range of cervical lordotic and cervical brow vertebral angle (CBVA). Unfortunately, one patient with loss of cranial fixation may be related to history of infection and lack of post-operative wound care. CONCLUSSION: Our cases conclude that Occipitocervical fixation is a safe technique that provides excellent fusion rate with good functional outcome and tolerable range of motion limitation. Due to its unique anatomy and technically demanding, serial post-operative monitoring evaluation of this procedure is paramount.

Low profile external fixation using locking compression plate as treatment option for management of soft tissue problem in open tibia fracture grade IIIA: A case series.

INTRODUCTION: External fixators are the most common fixation method for fractures with substantial soft tissue compromise. Nonetheless, the frames used are bulky, uncomfortable, and cumbersome to patients. Using locking compression plate (LCP) as an external fixator (low profile external fixation/LPEF) owns the same properties as standard external fixators but may overcome disadvantages because of its low-profile frame. This case series aims to evaluate the results of LPEF for the management of tibia fracture with soft tissue compromise. PRESENTATION OF CASES: We reviewed five patients at our centers who underwent surgery in 2020 with the application of LPEF. These patients had grade IIIA open tibia fracture with respective complications. The follow-up duration was 6 months post-operative in which we assessed Southampton Wound Assessment Scale (SWAS), laboratory infection markers, radiographic evaluation, and the Lower Extremity Functional Scale (LEFS). The results showed all wounds healed and cases with infection showed tendency of resolving, alongside varying degree of bone healing. The implant was well tolerated for patients and the functional outcome was overall good (mean LEFS: 71.26%). DISCUSSION: The LPEF is fortuitously lightweight and more convenient for patients to ambulate, thus the compliance of early functional exercise is more likely to happen. CONCLUSION: Application of LPEF can be considered as an option for treating soft tissue compromised tibia fracture. In our experience, it is low profile, more acceptable to the patients, and displayed favorable outcomes especially in terms of soft tissue or skin healing and infection resolution.

The unilateral reverse latissimus dorsi flap for soft tissue coverage of midline thoracal defects after spine surgery procedure: A case report.

INTRODUCTION: The thoracolumbal region is often a difficult area to reconstruct for orthopaedic surgeons. Reconstruction of this area with a standard free tissue transfer is not always possible, and locoregional flaps are often failed due to poor quality outcome and mobilization difficulty. CASE REPORT: A case was presented with unilateral distally based latissimus dorsi flaps reconstruction in patient with midline thoracal soft tissue defect underwent kyphosis deformity correction surgery. This study reported a patient, male, 33 years old who was diagnosed with ankylosing spondylitis and kyphosis deformity. The patient underwent surgical correction of the kyphosis deformity. After 1 month, the patient complained about his open surgical wounds. CLINICAL DISCUSSION: In our institution, this patient underwent second debridement surgery and unilateral reverse latissimus dorsi flap for thoracal soft tissue defect coverage to obtain well-vascularised tissue, with good resistance to bacterial contamination and easy to shape into such defect. After follow-up for 6 months, the patient shows good outcome and postoperative wound healing was favorable. CONCLUSION: We believe that the "reverse" latissimus dorsi flap is a good option to cover this particular region. It is simple, safe, and reliable. It also provides a backup plan for the microsurgery in this region.